That bit is an artefact of the snippet; it is not intended by me. That said, in the edit mode/pure md text I am using something I blagged from someone (sorry my source- keeping is not good). This enables a “On This Day” list to be developed, thusly…
<span style="column-width: 250px; font-size: 11.5px;">![[2010-12-22]]</span>
Each year gets an entry, and the specific date is generated each day by my text-expander. The left part you refer to is a blank year in the past - for which there is no corresponding daily note.